My solution? A project planner!
Project planning for me consists of two or three parts. First, I have a master list. This is where I keep every single idea I have for a project. It is usually very general such as "Breakfast Bar" or "Shoe Rack". Sometimes I set a target date to get it done... most of the time I don't.
I usually only work on one project at a time... otherwise I end up with a bunch of half finished projects. After using my project planning worksheet for a while, I came up with a "room redo" worksheet. It most just helped me get a vision for the entire room rather than smaller pieces of the room. For example, the room redo of my dining room consists of the mini projects of reupholstering our bench (a steal from the local furniture store... with cheetah print upholstery), repurposing a long window as a picture frame to hang, and making burlap/lace placemats.
In addition, I write down any supplies needed (not including project supplies). For my dining room example, I needed to purchase a mirror and some corner reed decor (which I found at a garage sale this weekend... score!).
As usual, these printables are free for you to use.
Do you have any projects you've just completed? I have a breakfast bar in the works and cannot wait to finish it! Check back for that update. :)